1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * VMware VMCI Driver 4 * 5 * Copyright (C) 2012 VMware, Inc. All rights reserved. 6 */ 7 8 #ifndef VMCI_DOORBELL_H 9 #define VMCI_DOORBELL_H 10 11 #include <linux/vmw_vmci_defs.h> 12 #include <linux/types.h> 13 14 #include "vmci_driver.h" 15 16 /* 17 * VMCINotifyResourceInfo: Used to create and destroy doorbells, and 18 * generate a notification for a doorbell or queue pair. 19 */ 20 struct vmci_dbell_notify_resource_info { 21 struct vmci_handle handle; 22 u16 resource; 23 u16 action; 24 s32 result; 25 }; 26 27 /* 28 * Structure used for checkpointing the doorbell mappings. It is 29 * written to the checkpoint as is, so changing this structure will 30 * break checkpoint compatibility. 31 */ 32 struct dbell_cpt_state { 33 struct vmci_handle handle; 34 u64 bitmap_idx; 35 }; 36 37 int vmci_dbell_host_context_notify(u32 src_cid, struct vmci_handle handle); 38 int vmci_dbell_get_priv_flags(struct vmci_handle handle, u32 *priv_flags); 39 40 bool vmci_dbell_register_notification_bitmap(u64 bitmap_ppn); 41 void vmci_dbell_scan_notification_entries(u8 *bitmap); 42 43 #endif /* VMCI_DOORBELL_H */ 44